Python for RF and SDR prototyping.

• Trigger GitHub action to publish to PyPI with a tagged commit (e.x. git tag -am "test auto versioning" 0.0.2) on main branch. Note versioning is also inferred from the git tag value, and this will only run on push on tag.
• Documentation uses mkdocs-material, preview with $ mkdocs serve. Publishes with GitHub action as well.